They were joined by three male Democratic senators, Bob Casey, Joe Donnelly and Sherrod Brown.

“Today, I am calling on my colleague Al Franken to step aside,” Hirono wrote on Twitter. “I’ve struggled with this decision because he’s been a good senator and I consider him a friend. But that cannot excuse his behavior and his mistreatment of women.”

Several high-profile male politicians have been accused in recent weeks of sexual misconduct, including Republican Senate candidate Roy Moore and Democratic representative John Conyers, who resigned on Tuesday. Both of those men have denied the allegations against them.